William c



NITED STATE WILLIAM o. SANFORD, OFAMS'IERDAM, NEW YORK.

P TENT OFFICE. I

SPIN ING-MACH NE, 8L0.

SPECIFICATION forming partof Letters Patent No. 376,831, dated January 24,1888.

Application filed May 14, 1887. Serial No. 238,247. (ModeL) To all whom it may concern.-

Beit known that I, WILLIAM C. SANFORD, a citizen of the United States, residing at Amsterdam,in the county of Montgomery and State of New York, have invented certain new and useful Improvements in .Spinning-lliachines, 8m; and I do hereby declare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which it appertains to make and use the, same. p

My invention relates to automatic means for use in connection with spinning, doubling, twisting, and winding machines, by: which threads are caught and rigidly held whenever a breakage of. the same occurs between the feed-rollers and the spinning or windin g mechanism; and the object of the invention is to prevent waste of material from a continued feed of the thread after .breakagetakes place.

In the accompanying drawings, Figure 1 represents in vertical section a portion of a spinning-frame with my invention shownin elevation. Fig. 2 is a front view of my invention, the operating-lever, which rests upon the thread, being cross-sectioned. Fig. 3 is a vertical section in the line m of Fig. 1. Fig. 4is a horizontal section in the line 3/ 3/ of Fig. 3.

In the drawings,fA represents a portion of a spinning-frame provided with spools a a and feed-rollers a a B is a ring-rail provided with ring I) for spindle b, carrying bobbin b, for receiving the united threads 0 c.

D is my improved slopping mechanism, which comprises a base-plate, d, and threadnipping and slotted guide-plate d, thread-nipping plateE, operating-lever F, and balancing-weight f, as shown, or their equivalents. The plate d, formed on and with the plate d,

, is provided with avert-ical slot, d and a headed pivot, d on which latter the thread-nipping plate E is hung, The nipping-plate E is provided with an uprightjaw, e, and an arm, 6,

having a radial or nearly radial slot, e".

upon the several united threadsbetween the iced-rollers a a and the central guide, a, of

thespinning-frame. Thesaid operating-lever is fastened, by means of a set-screw, f, to the balancing-weight f, through which its end f is passed. The balancing-weighty is pivoted between two vertical lugs, a a of the plated by means of a pivot or short journals at a right angleto the pi votof the vibrating nipping-plate E, and it almost balances the weight of the lever F, while the hook f rests at 0 upon the several united threads; but when the thread is of the threads. When the front portion ofthe operating-levcr drops, the rear portion, f, swings up, and by the aidof the 'slotted extension 6 c ofthe thread-nipping plate E moves the same upon its pivot. d untilthe jaw-ehas passed and covered the slot (P, in which posi- I tion the plate E and its jawe, in conjunction with the guiding and nipping plated, seize or nip and hold the threads, as illustrated in Fig. 4, so as to stop their further passage ,toward the feedrollers. It will be understood thatthe nipping-plates described are dull on their opposing or passing edges, and thatthe ends of the broken threads are caughtand moved laterallybetweenthe two plates and held between these dull edges and the adjoining surfaces of the nipping-plates without being cut, the action being such that they are so firmly held thatnomore thread can be withdrawnfrom thespools by the'feedrollers until the nip is causedto cease; In their action the nipping-plates. resemble a pair of shears or scissors,'with one limb stationary and the other vibrating, but both limbshaving dull edges and incapable of cutting.

The broken thread being reunited and the hook f being, placed upon it, the resulting upward motion of the front portion of the leverF and the downward motion of the rear portion, f", of the same move the thread-nipping plate E back to its normal position, (shown in Fig. 2,) and the threads 0 c are released and allowed to move toward the feed-rollers. Thus the slightest loss of thread by continued feed after 'loreaka age is avoided, as the breaking of the thread and its checking by my device are simultaneous.

My invention avoids loss of labor and delay in the removal of wasted thread.

It will be apparent that the described invention can be attached to frames of either old or new constructions without removal of or change in the construction of the feed-rollers or other parts of the machines, as is frequently required in the adoption of other stopping devices.

I am aware that various constructions of stop-motions for spinning and twisting niachines have been devised and patented, but I am not aware that a combination similar to mine has been contrived, the same comprising an automatic vibrating nipping-plate applied in a novel manner with a stationary guiding and nipping plate and a gravitating lever, as hereinbefore described, said combination causing the ends of the broken threads to be moved aside between nipping surfaces and to be firmly nipped and held between said surfaces until the threads are reunited.

WhatI claim as my invention, and desire to secure by Letters Patent, is a 1. The combination of the nipping-plate E, plate d, and weighted lever F, the said plate E being formed with a slotted extension, as e e, and with a jaw, c, and pivoted to the plate (1, while the plate d is provided with a slot, as d, and the lever F connected by one of its ends to the plate E, while its other end is pendent upon the threads of yarn being twisted, substantially as described.

2. The Vibrating nipping-plate E and the gravitatinglever F, in combination with a nipping and guide plate, d, the said vibrating plate being pivoted to the plate (1 and moving on its pivot in a transverse direction to the threads being fed to the twisting mechanism, and thereby causing the broken ends of the threads to be moved laterally between itself and the plate (1 and nipped firmly, substantially as and for the purpose described.

3. The combination of the vibrating nipping-plate E, formed with a jaw, e, and an extension, 6, having a slot, 6, the nipping and guiding plate (1, and the gravitating lever F, the latter hung on a pivot and swinging trans vcrsely to the direction in which the plate E moves, substantially as and for the purpose described.

4. The weightf, pivoted to the plate d, the gravitating lever F, looped or bent at its forward end and having its rear end passed through the weight above the pivot thereof, the vibrating nipping-plate E, pivoted at d and provided with a slotted extension, and connected to the rear end of the lever F by said slotted extension, and the guiding nipping-plate at, substantially as and for the purpose described.

5. The vibrating nipping-plate E, formed with ajaw, e, and an extension, (5, having a slot, 6", the nipping-plate (1, provided with a pivot, d, on which the plate E is hung and vibrated, and with a slot, (1", the lever F, and the ivoted weightf, said lever having its rear end passed through the pivoted weight f and into the slot 6 of the plate E in a direction at a right angle to the pivot of the weightf and the movement of the plate E, and having its front end adapted to rest upon the threads be- \VILLIAM 0. SAN FORD.

\Vitnesses:

VVM. J. BENN, L. F. MILLER. 

